^ Oi^\A^oeJ' 



ECHINODERMA OF THE INDIAN MUSEUM, PART IX 

 ECHINOIDEA (II) 



AN ACCOUNT 



ECHINOIDEA 



RENÉ KŒHLER 



PROFESSOR OF ZOOI.OGY IN THE UNIVERSITY OF LYON 



CALCUTTA 



PUBLISHED BY' THE DIRECTOR, ZOOLOGICAL SURVEY^ OF INDIA 



December 1922 



PRICE FIFTEEN RUPEES 



